If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Get ready for Precalculus

Course: Get ready for Precalculus > Unit 6

Lesson 3: Constructing geometric sequences
Math
Get ready for Precalculus
Get ready for series
Constructing geometric sequences
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Recursive formulas for geometric sequences

Google Classroom
You might need: Calculator

Problem

Complete the recursive formula of the geometric sequence −1.5,6,−24,96,….
d(1)=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
d(n)=d(n−1)⋅
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
Stuck?
Stuck?